package com.mmall.util;

import java.math.BigDecimal;

/**
 * Created by geely
 */
public class BigDecimalUtil {

  private BigDecimalUtil() {

  }


  public static BigDecimal add(double v1, double v2) {
    BigDecimal b1 = new BigDecimal(Double.toString(v1));
    BigDecimal b2 = new BigDecimal(Double.toString(v2));
    return b1.add(b2);
  }

  public static BigDecimal sub(double v1, double v2) {
    BigDecimal b1 = new BigDecimal(Double.toString(v1));
    BigDecimal b2 = new BigDecimal(Double.toString(v2));
    return b1.subtract(b2);
  }


  public static BigDecimal mul(double v1, double v2) {
    BigDecimal b1 = new BigDecimal(Double.toString(v1));
    BigDecimal b2 = new BigDecimal(Double.toString(v2));
    return b1.multiply(b2);
  }

  public static BigDecimal div(double v1, double v2) {
    BigDecimal b1 = new BigDecimal(Double.toString(v1));
    BigDecimal b2 = new BigDecimal(Double.toString(v2));
    return b1.divide(b2, 2, BigDecimal.ROUND_HALF_UP);//四舍五入,保留2位小数

    //除不尽的情况
  }


}
